词根词缀：sulc-, sulco-
【来源及含义】Latin: furrow, groove; trench
【同源单词】bisulcate, crebrisulcate, multisulcate, quadrisulcate, semisulcus, sulcal
词根词缀：tri-, tre-
【来源及含义】Greek > Latin: a numerical prefix meaning, three, thrice, threefold; triple; a word element for number 3
【相关词根词缀】 Cross references of word families that are related, partially or totally, to: "three, third": terce-; terti-; trigono-; trito-.